Machines

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Across
  1. 3. Any device or system that helps perform work or accomplish a task
  2. 4. A rigid bar that rotates around a fixed point to lift or move objects
  3. 6. A flat surface extending infinitely in all directions
  4. 7. A wheel with a grooved rim and a rope or chain passing over it to lift or move loads
  5. 8. A spiral wonder, it turns to secure or lift
  6. 10. Basic mechanical devices with few or no moving parts
  7. 11. Triangular tool, a force to be reckoned with
Down
  1. 1. A sloping surface that reduces the force needed to lift an object
  2. 2. A toothed wheel that meshes with another to transmit motion or change speed
  3. 5. Circular duo, one spins around the other, making movement smoother
  4. 9. A combination of several simple machines working together